M LLET
Füllstandtechnik
GmbH
Marking in accordance with ATEX and DIN EN IEC 60079-0
MOLOS
Silo pressure detector
MSD
Equipment category Category 1 for zone 20, 21 and 22
/ = Silo pressure detectors, which are installed
on the boundary between different zones
Category 2 for zone 21 and 22
Equivalent to valid ATEX-Product-Directive
D = Dust - Type of explosive atmosphere
Silo pressure detector for use on the boundary from zone 20 to zone 21.
Equipment group II = everything except mining
W II 1/2 D Ex ta/tb IIIC T80°C Da/Db
t = Protection by enclosure
T..°C maximum surface temperature
IIIC for flammable conductive dust, flammable non-conductive dust and flammable fibres and flyings
a = Device with „very high“ protection standard . . . . for zone 20, 21 and 22
Equipment Protection Level (EPL)
D = Dust - Type of explosive atmosphere
the Ex - symbol according to DIN EN IEC 60079-0
a = Device with “very high level of protection” for use in potentially explosive atmospheres where in
normal operation, foreseeable or infrequent faults/malfunctions no ignition hazard is given.
b = Device with „high“ protection standard . . . . . . . . for zone 21 and 22
b = Device with “high level of protection” for use in potentially explosive atmospheres where in
normal operation or foreseeable faults/malfunctions no ignition hazard is given.
W II 2G Ex ib IIC T6 Gb
Silo pressure detector for use in zone 1.
Equipment category Category 2 for zone 1 and 2
i = Protection by intrisically safe
b = Device with “high level of protection” for use in potentially explosive atmospheres where in
normal operation or foreseeable faults/malfunctions no ignition hazard is given.
Temperature class T6 = 85°C
G = Gas - Type of explosive atmosphere
G = Gas - Type of explosive atmosphere
IIC for all flammable gases
Equipment Protection Level (EPL)
b = Device with „high“ protection standard . . . . . . . . for zone 1 and 2
W II 1D Ex ta IIIC T 80 °C Da
200
Silo pressure detector for use in zone 20.
Equipment category Category 1 for zone 20, 21 and 22
Equipment category Category 1 for zone 0, 1 and 2
i = Protection by intrisically safe
a = Device with „very high“ protection standard . . . . for zone 0, 1 and 2
Silo pressure detector for use in zone 0.
W II 1G Ex ia IIC T6 Ga
04 MSDA-EIG-02 08/21 © by MOLLET
Explosion protection information MOLLET D-74706 Osterburken Tel. +49 6291 6440-0 www.mollet.de